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Finding the Fourth Proportional to 10,418.82, 15,631.06 and 5,487.13

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Solution

The fourth proportional to 10,418.82, 15,631.06 and 5,487.13 is: 8,232.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.82 : 15,631.06 = 5,487.13 : x
  2. Step 2: Convert to fraction form
    10,418.82/15,631.06 = 5,487.13/x
  3. Step 3: Cross multiply
    10,418.82x = 15,631.06 × 5,487.13
  4. Step 4: Simplify right side
    10,418.82x = 85,769,658.26
  5. Step 5: Solve for x
    x = 85,769,658.26/10,418.82
  6. Step 6: Final answer
    x = 8,232.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.